IceY60´s Patrols.

[growler2058]

Any 4.2 will easily handle a turbo mate no worries as long as its not stuffed already

[Stropp]

Hi Gisli, as growler said the td42 will be fine to turbo providing the engine is ok. there are people over here putting turbos on at 250,000 km on the speedo so no worries, get into it mate and post some pics as you do it up please.

[IceY60]

Good to hear. But how much can the 4.2 engine handle inn turbo preassure?? I was hoping to be able to blast it with 18-20psi with out damaging something. I just tuned my engine up to 16psi now. I´ve been having some problems with the RD28T for a while. The engine gets lazy around 2300rpm and above. I´t was not like that and it worked as hell. Atlest for an 2,8 engine. But now the power has been going down. It works good on low rpm. 1200-2000rpm It´s giving alot of black smoke. The injectors are newlie rebuild. Every filter is new. And spot any leaks from the fuel lines.. So I decided to tune up the turbo. It´s vorking better. but I can still feel like the something is stopping the engine from getting on higher rpm. Seems to very hard to get it upp from 2500-3200rpm. I´m starting to consider to send the injector pump to an rebuild :/

[happygu]

Gisli,

You don't need to push the old 4.2 Diesels to 18 PSI to get good results, and many will tune them for around 10 - 13 PSI and be happy to have an engine that goes well, but will last forever ...... on the other hand, there are lots of guys now pushing bigger Turbos and boosts, and as long as they are tuned well, seem to last ok too.

Mic

[Stropp]

I run mine at 15 psi but with a td05 turbo and cross country intercooler with 3" dump pipe and exhaust, it's a later motor but some guys are pushing 30 psi, I am very happy with mine, does everything I want and pulls like a train.

[IceY60]

I could be happy with 15psi. But to my other problem with the RD28T. Yesterday I tuned to turbo up to 16psi. I got a litle more power but I´m still wondering what the hell is going on. It's just not in to high rpm. as soon as the engine goes over 2300rpm it gets lazy and wont go easily over 2300rpm. The fuel filters are new. Air filter is new. Injectors are newly rebuild. I can´t find anything wrong with the fuel lines. Everything is like new inside the fueltank. This engine is starting to piss me off. At 3000rpm it seems to be stuck. But running in 1. or 2. gear I can turn the engine to 4-5000rpm with any problems. The engine used to work good and the power was very good compered to an 2.8 The turbine has run around 5000km and I always let the engine run a couple of minute before I turn it of. So what´s the next thing to do Injector pump??? And yea while I remember. the engine does alot of black smoke when driving in 4. or 5. gear upp hils it´s like a black fog behind me. I now the engine is not getting to much fuel. Because I´ve checked the screw for the fuel volume and It´s as the same place as the sealed injector pumps are. I´m just getting confused.

[BigRAWesty]

Yea I'd say to much fuel.. I'd go back to stock settings and go again..
Add boost and then a little fuel..
Have you got egt gauges fitted??
Watch them like a hawk..
Have you got a dyno tuner around so you can see what's actually happening when you adjust something??

[IceY60]

Yea I'd say to much fuel.. I'd go back to stock settings and go again..
Add boost and then a little fuel..
Have you got egt gauges fitted??
Watch them like a hawk..
Have you got a dyno tuner around so you can see what's actually happening when you adjust something??

Injector is in stock settings. Always has been. I have no EGT gauges yet. I have 3 row radiator and it never gets to hot. Always around the first quarter on the gauge. So I dont worry so much about the over heating. But It would better to have EGT gauge. We are starting to wonder about the timing on the injector pump. My friend had an idea. Maybe the timing is not working on higher rpm. Is that something that can be fixed with out removing the pump? I check the timing on the timing belt and everything matches. I don´t know the word for this thing wich is suposed to change the timing on the pump when the rpm gets higher. Atleast not the english word. Would be nice if someone could tell me that and also could it be fixed og changed. If I have remove the injector pump.. Then I´m thinking of another pump to put to rebuild and change when I get it back. In that way I don´t have to stop the truck for a maybe few days or some. I´m renting the truck out to a filmaker called peagsus. Tehy are doing a tv series here in Iceland. And the main actor is suposed to own the truck in the series. So I can´t stop the truck for to time. Time is money

[BigRAWesty]

Not familiar with the 2.8's so unsure if their a variable timing or not..

If it's gear or chain driven like the 4.2's then yea you'll have to dismantle and adjust..

But I'd go a egt gauge..

[IceY60]

Well. now it seems to be ok on high rpm. But it´s still to lazy when driving up hills. It´s almost working as well as it did before everything got fucked up. But than the boost was only 12psi max. Now it goes from 14-16psi... This engine is realy starting to piss me off. :/